Condensed Consolidating Balance Sheets (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 75,237	$ 101,971	$ 118,962	$ 245,935
Accounts receivable, net	378,706	448,320
Inventories	30,366	41,120
Prepaid expenses and other (including intercompany)	54,269	37,655
Total current assets	538,578	629,066
Property, plant and equipment, net	138,070	148,905
Goodwill	628,886	636,471
Other intangible assets, net	224,666	213,613
Investments	3,596	3,490
Intercompany note receivable (payable)	0	0
Other assets	11,616	12,902
Total assets	1,545,412	1,644,447
Current liabilities:
Current portion, long-term debt	15,000	15,000
Accounts payable and intercompany payable	257,072	334,378
Progress billings	39,296	39,975
Accrued expenses	90,257	98,409
Total current liabilities	401,625	487,762
Long-term debt	580,061	587,560
Deferred income taxes	66,798	67,404
Other non-current liabilities	53,023	52,187
Total liabilities	1,101,507	1,194,913
Stockholders' equity	443,905	449,534
Total liabilities and stockholders' equity	1,545,412	1,644,447
Parent Company
Current assets:
Cash and cash equivalents	54,185	68,887	84,913	211,933
Accounts receivable, net	98,314	123,558
Inventories	22,968	32,159
Prepaid expenses and other (including intercompany)	1,253,998	1,157,263
Total current assets	1,429,465	1,381,867
Property, plant and equipment, net	20,184	24,790
Goodwill	23,699	23,584
Other intangible assets, net	11,546	11,558
Investments	615,571	547,366
Intercompany note receivable (payable)	346,383	359,649
Other assets	8,721	9,710
Total assets	2,455,569	2,358,524
Current liabilities:
Current portion, long-term debt	15,000	15,000
Accounts payable and intercompany payable	1,324,569	1,210,296
Progress billings	14,529	15,952
Accrued expenses	50,708	52,675
Total current liabilities	1,404,806	1,293,923
Long-term debt	580,061	587,560
Deferred income taxes	(3,446)	(2,840)
Other non-current liabilities	30,243	30,347
Total liabilities	2,011,664	1,908,990
Stockholders' equity	443,905	449,534
Total liabilities and stockholders' equity	2,455,569	2,358,524
Guarantor Subsidiaries
Current assets:
Cash and cash equivalents	4,379	7,543	5,480	8,026
Accounts receivable, net	259,624	302,096
Inventories	7,395	8,958
Prepaid expenses and other (including intercompany)	2,744,699	1,993,450
Total current assets	3,016,097	2,312,047
Property, plant and equipment, net	116,763	122,565
Goodwill	598,198	605,898
Other intangible assets, net	213,120	202,055
Investments	15,328	21,385
Intercompany note receivable (payable)	(342,912)	(333,683)
Other assets	2,881	5,271
Total assets	3,619,475	2,935,538
Current liabilities:
Current portion, long-term debt	0	0
Accounts payable and intercompany payable	2,865,584	2,246,381
Progress billings	10,892	10,358
Accrued expenses	33,552	38,543
Total current liabilities	2,910,028	2,295,282
Long-term debt	0	0
Deferred income taxes	74,241	74,241
Other non-current liabilities	22,314	20,887
Total liabilities	3,006,583	2,390,410
Stockholders' equity	612,892	545,128
Total liabilities and stockholders' equity	3,619,475	2,935,538
Non-Guarantor Subsidiaries
Current assets:
Cash and cash equivalents	16,673	25,541	28,569	25,976
Accounts receivable, net	20,768	22,666
Inventories	3	3
Prepaid expenses and other (including intercompany)	1,451	23,217
Total current assets	38,895	71,427
Property, plant and equipment, net	1,123	1,550
Goodwill	6,989	6,989
Other intangible assets, net	0	0
Investments	0	0
Intercompany note receivable (payable)	(3,471)	(25,966)
Other assets	14	(2,079)
Total assets	43,550	51,921
Current liabilities:
Current portion, long-term debt	0	0
Accounts payable and intercompany payable	12,798	13,976
Progress billings	13,875	13,665
Accrued expenses	5,997	7,191
Total current liabilities	32,670	34,832
Long-term debt	0	0
Deferred income taxes	(3,997)	(3,997)
Other non-current liabilities	466	953
Total liabilities	29,139	31,788
Stockholders' equity	14,411	20,133
Total liabilities and stockholders' equity	43,550	51,921
Consolidating Adjustments
Current assets:
Cash and cash equivalents	0	0	0	0
Accounts receivable, net	0	0
Inventories	0	0
Prepaid expenses and other (including intercompany)	(3,945,879)	(3,136,275)
Total current assets	(3,945,879)	(3,136,275)
Property, plant and equipment, net	0	0
Goodwill	0	0
Other intangible assets, net	0	0
Investments	(627,303)	(565,261)
Intercompany note receivable (payable)	0	0
Other assets	0	0
Total assets	(4,573,182)	(3,701,536)
Current liabilities:
Current portion, long-term debt	0	0
Accounts payable and intercompany payable	(3,945,879)	(3,136,275)
Progress billings		0
Accrued expenses		0
Total current liabilities	(3,945,879)	(3,136,275)
Long-term debt	0	0
Deferred income taxes	0	0
Other non-current liabilities	0	0
Total liabilities	(3,945,879)	(3,136,275)
Stockholders' equity	(627,303)	(565,261)
Total liabilities and stockholders' equity	$ (4,573,182)	$ (3,701,536)